R Under development (unstable) (2024-01-28 r85838 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(tensorflow)
> library(greta.gp)
Loading required package: greta

Attaching package: 'greta'

The following objects are masked from 'package:stats':

    binomial, cov2cor, poisson

The following objects are masked from 'package:base':

    %*%, apply, backsolve, beta, chol2inv, colMeans, colSums, diag,
    eigen, forwardsolve, gamma, identity, rowMeans, rowSums, sweep,
    tapply

> 
> test_check("greta.gp")
i Initialising python and checking dependencies, this may take a moment.
v Initialising python and checking dependencies ... done!


running 4 chains simultaneously on up to 2 cores


    warmup                                              0/2 | eta:  ?s          
    warmup ============================================ 2/2 | eta:  0s          

  sampling                                              0/2 | eta:  ?s          
  sampling ============================================ 2/2 | eta:  0s          
running 4 chains simultaneously on up to 2 cores


    warmup                                              0/2 | eta:  ?s          
    warmup ============================================ 2/2 | eta:  0s          

  sampling                                              0/2 | eta:  ?s          
  sampling ============================================ 2/2 | eta:  0s          
running 4 chains simultaneously on up to 2 cores


    warmup                                              0/2 | eta:  ?s          
    warmup ============================================ 2/2 | eta:  0s          

  sampling                                              0/2 | eta:  ?s          
  sampling ============================================ 2/2 | eta:  0s          
running 4 chains simultaneously on up to 2 cores


    warmup                                              0/2 | eta:  ?s          
    warmup ============================================ 2/2 | eta:  0s          

  sampling                                              0/2 | eta:  ?s          
  sampling ============================================ 2/2 | eta:  0s          
running 4 chains simultaneously on up to 2 cores


    warmup                                              0/2 | eta:  ?s          
    warmup ============================================ 2/2 | eta:  0s          

  sampling                                              0/2 | eta:  ?s          
  sampling ============================================ 2/2 | eta:  0s          
running 4 chains simultaneously on up to 2 cores


    warmup                                              0/2 | eta:  ?s          
    warmup ============================================ 2/2 | eta:  0s          

  sampling                                              0/2 | eta:  ?s          
  sampling ============================================ 2/2 | eta:  0s          
running 4 chains simultaneously on up to 2 cores


    warmup                                              0/2 | eta:  ?s          
    warmup ============================================ 2/2 | eta:  0s          

  sampling                                              0/2 | eta:  ?s          
  sampling ============================================ 2/2 | eta:  0s          
running 4 chains simultaneously on up to 2 cores


    warmup                                              0/2 | eta:  ?s          
    warmup ============================================ 2/2 | eta:  0s          

  sampling                                              0/2 | eta:  ?s          
  sampling ============================================ 2/2 | eta:  0s          
[ FAIL 0 | WARN 16 | SKIP 5 | PASS 60 ]

══ Skipped tests (5) ═══════════════════════════════════════════════════════════
• On CRAN (5): 'test_gps.R:136:3', 'test_kernels.R:289:3',
  'test_kernels.R:300:3', 'test_kernels.R:312:3', 'test_kernels.R:330:3'

[ FAIL 0 | WARN 16 | SKIP 5 | PASS 60 ]
> 
> proc.time()
   user  system elapsed 
  67.42    2.35   87.59